English 中文(简体)
使用 javamart 浮点文字时的意外结果
原标题:unexpected result when using Floating-point literals in javascript
  • 时间:2012-05-22 19:39:49
  •  标签:
  • javascript

看看这个代码

var x=2E-7
console.log(x);

当我运行结果为 2E-7 而不是 200000 时

为什么 是虫子还是其他的?

问题回答

2E-7是 2 * 10-7

AKA 00000002

2E7是2 * 107

AKA 200000000





相关问题
selected text in iframe

How to get a selected text inside a iframe. I my page i m having a iframe which is editable true. So how can i get the selected text in that iframe.

How to fire event handlers on the link using javascript

I would like to click a link in my page using javascript. I would like to Fire event handlers on the link without navigating. How can this be done? This has to work both in firefox and Internet ...

How to Add script codes before the </body> tag ASP.NET

Heres the problem, In Masterpage, the google analytics code were pasted before the end of body tag. In ASPX page, I need to generate a script (google addItem tracker) using codebehind ClientScript ...

Clipboard access using Javascript - sans Flash?

Is there a reliable way to access the client machine s clipboard using Javascript? I continue to run into permissions issues when attempting to do this. How does Google Docs do this? Do they use ...

javascript debugging question

I have a large javascript which I didn t write but I need to use it and I m slowely going trough it trying to figure out what does it do and how, I m using alert to print out what it does but now I ...

Parsing date like twitter

I ve made a little forum and I want parse the date on newest posts like twitter, you know "posted 40 minutes ago ","posted 1 hour ago"... What s the best way ? Thanx.

热门标签